trailer AUDI S8 2008 User Guide

Adaptiv e Air Su spension 11!11
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Ad apt iv e Air Suspension
Adaptive Air Suspension and
Damping
Description
Adaptive Air Suspension and damping can be regulated
and they adapt automatically to a request from the driver
and the driving situation at the time.
Adaptive Air Suspension is an electronica lly contro lled springing
and damping system. T his chassis system makes it eas ier on the
driver by adapting to the particu lar situation through imperceptible
control processes.
The
Ad apti ve Air Suspen sion component regu lates ground c lear­
ance depending on vehicle speed, load condition and driver input .
Acce lerat ing to a speed above a predetermined limit wil l make the
vehic le lower i tself. On the other hand, driving more slowly results
in the vehic le rais ing again at specific speeds .
T he
d amp in g component provides individual contro l of the
damping forces. For examp le, with damping characteristics set to
provide greater comfort, damping is set somewhat harder for a brief
period only as required, for example, when going around a curve or
over rough road surfaces as well as when brak ing.
S ett ing s
Adaptive Air Suspension provides the driver with the opportunity to
set the chassis characteristics a lso to their individua l preference .
With the driving modes
standard, automatic and dynamic the driver
has three chassis settings availab le, ranging from comfort to sporty.
In addition,
lift provides a fourth mode wh ich can be selecting for
driving over poor stretches of
road~ page 186, "Chassis Contro ls" .
The modes are se t in MMI
~ page 188.
Controls and equip­ ment
On vehicles equipped with the sport su sp en sion Adaptive Air
Suspension -Sport *, there is genera lly more emphasis on a sporty
chassis sett ing. Settings range from comfortable to firm
~ page 187, "Sport Chassis Contro ls".
0 Note
• Whenever you park your vehicle, always make sure there is
adequate c learance above and be low the vehicle . The height of the
parked vehicle can change as the result of temperature fluctuations,
changes in l oad condition and c hanges in the driv ing m ode (ground
c learance).
• Mount the tie -down cha ins/cab les over the running surface
(circumference) of the tires . Never secure the vehicle by the axle, the
suspens ion stru ts or the front or rear towline eye . For tec hn ica l
reasons , the pressure in the suspension struts may change during
the transport and this wil l adversely affect vehicle handling.
• To prevent damage to the vehic le underbody, remember that
your vehicle is not a n off -road vehicle, even in the lift mode . The
ground clearance is insufficient for this type of operation .
• If you are going to tow a tra iler, you mus t activate the trailer oper ­
ation
mode~ page 189 .
[ i ] Tip s
Before you can raise your vehic le using the vehicle jack (for
examp le, when changing a flat tire) you must activate the jacking
mode
~ page 188 . •

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[ i ] Tips
The veh ic le jack mode is switched off automatica lly at speeds above
9 mph (15 km/h) .•
Towing a Trailer
Automatic lowering is not desirable when towing a trailer.
Fig . 212 MMI displ ay:
Activate towing opera·
tion
If you are going to tow a trailer, you must activate the trailer
towing mode .
Switching the trailer towing mode on and off
manually
-Pressthe(CAR] function button. The main menu
Adaptive Air Suspension appears .
-Press the I SETUP] function button. The menu Adaptive
Air Suspension
appears => fig. 212.
-Select Trailer towing mode on or off as desired.
Level Adjustment when Towing a Trailer
The following applies to veh ic les wi th Adaptive Air Suspension:
Controls and equip­
ment
• Before hitching up the trai ler and before adjusting the tongue
weight at the trailer, the automat ic or standard mode
must be
selected, so that the vehicle is at normal leve l
~ page 188, "Setting
the Driving Modes".
• If driving in dynamic mode is desired, this mode
must be
se lected before hitching up the trailer and before adjusting the
tongue weight . However, note that your vehic le is lowered and
ground c learance is reduced.
• If you have to drive under difficult road conditions, you can
select lift mode after hitching up the trailer or after adjusting the
tongue weight .
The following applies to vehicles with
sport suspension Adaptive Air
Suspension
· Sport*:
• Before hitching up the trai ler
and before adjusting the tongue
weight at the trailer, the automatic, standard or dynamic mode
must
be selected, so that the vehic le is at normal level~ page 188,
"Setting the Driving Modes".
• If you have to drive under difficult road conditions, you can
select lift mode after hitching up the trailer or after adjusting the
tongue weight .
Restrictions when Operating with a Trailer
When operating with a trailer, the lift mode can on ly be se lected up
to about 25 mph (40 km/h). The system automatical ly goes out of lift
mode when speed exceeds about 31 mph (50 km/h).
I f the vehic le is in automatic, standard or lift mode before the trai ler
towing mode is activated, the dynamic mode cannot be activated ·
except on vehicles with
sport suspension Adaptive Air Suspension -
Sport*.
If the vehic le is in dynamic mode before towing operation is acti·
vated, it can be driven in this mode. If the suspension is shifted from
this mode to automatic mode, dynamic mode cannot be
re-selected .~

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Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor­
tation.
If you plan to tow a trailer, please remember that the add it ional load
wi ll affect durability, economy and performance.
Tra iler towing not on ly p laces more stress on the vehicle, it a lso ca lls
for more concentration from the driver.
For this reason, always fol low the ope rating and driv ing instruc tions
provided and use common sense.
(D Note
If you are go ing to tow a trai ler, you must activate the trailer opera ­
tion
mode => page 189, "Towing a Trailer". •
Technical requirements
Traile r hit ch
Use a we ight-carrying hitch conforming to the gross trai ler weight.
The hitch must be suitable for your vehic le and trailer and must be
mounted secure ly on the ve hicle's chass is at a
technically sound
location. Use only a trailer hitch with a removable ball mount.
Always check wit h the trai ler hitch manufacturer to make s ure that
you are using the correct hitch .
Do not use a bumper hit ch.
The hitc h must be installed in such a way t hat it does not interfere
with the impact-absorbing bumper system. No modifications
should be made to the veh ic le exhaust a nd brake systems. F rom time to time, check that all hitch mounting bolts remain secure
ly
fastened .
When yo u are no t towing a trailer, re move the tra ile r hitch ball
mount. This prevents the hitch from causing damage shou ld your
vehic le be struck from
behind =>& .
Traile r br ake s
If your tra iler is equipped with a braking syste m, check to be sure
that it conforms to al l regu lations .
The tra iler hydraul ic brake sys tem must not be di rect ly co nnected to
t he vehic le's hydrau lic brake system .
Safety chains
Always use safety chains between your vehicle and the trailer.
Trailer light s
Trai ler lights must meet a ll regulations. Be sure to check with your
Aud i dea ler for correc t wir ing, sw itch es and relays .
Mirrors
If you are unable to see the traf fic behind you using the regu lar
outside mirrors, then you
must instal l extended mirrors. It is impor ­
t ant that you
always have c lear v ision to the rear.
& WARNING
After removing the tr ailer hitch , do not store it in your vehi cle . In
ca se of sudden braking , the hitch could fl y forward and injure you
or your p assenger s.•

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Operating instructions
M ax im um tra iler weig ht
A trailer for your vehicle is limited to a typ ical c lass 1 or class 2
trailer.
T ra ile r l oad d is tributi on
Be sure the load in the trailer is he ld securely in place to prevent it
from shifting forward, backward or s ideways .
Never a llow a pass enger to r ide in a trailer:::::, & in "Driving instruc­
t ions" .
Engin e coo lin g sys te m
Tow ing a trai ler makes the engine work harder. It is important that
the cooling system's performance is up to the additiona l load. Make
sure that the coo ling system has enough fluid .
Tire press ure
When towing a trailer, inflate the tires of your veh icle to t he co ld tire
pressure listed under "Full load" on the labe l located either on the
driver's side B -pil lar (visible when the door is open) or inside the fuel
filler flap . Inflate trailer tires to trai ler and tire manufacturers' spec­
ifications.
L ig ht s
The head light settings should be checked wit h the trai ler attached
before driving off. Check to make sure both vehicle and trai ler lights
are working properly .
Safe ty c ha in s
Be s ure trailer safe ty chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough slack in the chains to
permit turning corners . When yo u insta ll safety chains, make sure
they will not drag on the road when you are driving.
T he chains should cross under the trailer tongue to prevent it from
dropping in case of separat ion from the hitch.
Controls and equip­
ment Safety first
Vehicle operation
0 Note
If you are go ing to tow a trai ler, you must activate the tra iler opera­
tion
mode :::::, page 189, "Towing a Trailer". •
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possib le handling of ve hicle and trailer,
p lease note t he following :
- Do not tow a loaded trailer when your car itself is not
loaded.
- Be especia lly careful whe n passing other vehic les .
- Observe speed limits .
- Do not drive at the maximum permiss ible speed .
- Always apply brakes early.
- Monitor t he temperature ga uge .
W eight d istr ibu tion
Towing a loaded trailer with an empty car results in a highly
unstable d istribution of weight. If this cannot be avoided, drive at
very low speeds only to avoid the risk of losing steering control.
A "balanced" rig is easier to operate and control. This means that
t he tow vehicle should be loaded to the extent possible and permis ­
sib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considera tions .
.,,.
Vehicle care Do-it-yourself service Technical data

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Speed
The higher the speed, the more difficu lt it becomes for the driver to
control the rig. Do not drive at the maximum permissible speed. Reduce your speed even more if load, weather or wind conditions
are unfavorable
-particularly when going downhi ll.
Reduce vehicle speed
i mm edia te ly if the trailer shows the slightest
sign of swaying.
Do not try t o stop the sway ing by accelerating.
Observe speed lim its. In some areas, speeds for vehicles towing
trai lers are lower than for regular ve hicles .
Always apply brakes ear ly. When driving down hill, shift into a lower
gear to use the engine braking effect to slow the vehicle. Use of the
brakes a lone can cause them to overheat and fail.
Cool ant temp era tu re
The coolant temperature gauge=> page 12 must be observed care­
ful ly. If the needle moves close to the upper end of the scale, reduce
speed immed iately and/or turn off the air conditioner.
If the coolant temperature warning light in the instrument cluster
starts flas hing
-F- , pul l off the road, stop and let t he engine idle for
about two m inutes to prevent heat build-up.
& WARNING
An yone n ot properl y re str aine d in a mo ving vehi cle is at a mu ch
g re ate r ri sk in an accid ent . N ever let any on e rid e in y our car who
i s not properl y wea rin g th e res tra int s pr ov ided by Audi.
•
Trailer towing tips
Important to know
Your vehicle handles differently when towing a trailer because of
the additional weight and different weight distribution. Safety, performance and economy wi
ll greatly depend on how carefully you
l oad your trailer and opera te your r ig.
Before you actual ly tow your trailer, practice turn ing, stopping and
backing up in an area away from traffic . Keep practicing unti l you
have become comp letely fam iliar with the way your vehicle-trai ler
combination behaves and responds.
Backing up is di fficult and requires practice. Backing up with a
trai ler generally requires steering action opposite to that when
backing up your veh ic le without a tra iler.
Ma inta in a greater distance between your veh ic le and the one in
front of you . You will need more room to stop. To compensate for
the trai ler, you w ill need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you n or mally wou ld because of t he added load . Make su re you have
enough room to pass . After passing, al low plenty of room for your
t rai ler befo re changing lanes again .
Avo id jerky starts, sharp turns or rapid lane changes.
[ i ] T ips
• Do not tow a tra iler during the break-in period o f your veh ic le.
• I f you tow a trailer, your Audi may require more frequent main te­
nance due to t he extra
load=> page 380. •
Parking on a slope
Do n ot park on a slope with a trailer. If it cannot be
avoided, do
so o nly after doing the followi ng:
When p arking :
-Apply the foot b rake.
- Have someone p lace chocks under both the vehicle and
the trailer wheels. _,,,

Tires and wheels Ill
----------------
•
& WARNING (continued )
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehi cle within a safe distance .
• Tires on a vehicle that has been overloaded can fail suddenly
c au sing lo ss of control and a cra sh.
• Always make sure that the total load being transported -
including the we ight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
v ehicle's Gross Vehicle Weight Rating .
& WARNING
• Incorrect tire pressures and /or underinflation can lead to a
serious or fatal accident.
• Incorre ct tire pressures and /or underinflation cause in creased
tire wear and can affect the handling of the vehicle .
• Incorrect tire pressures and /or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
c ausing loss of vehi cle control.
•
Checking tire pressure
The c orrect tire pressu re f or the tires ori gina lly installe d
on your vehicle is lis ted on the ti re pressure la bel loca ted
either on driver's side 8-pillar or inside the fuel filler flap.
The rec omme nded ti re p ressu res a re on the tire pr essure la be l an d
in the
table~ page 328, "Co ld tire inflation pressure". This means
t ha t th e pres su re m us t be c hecked a nd adjus ted w he n t he ti re has
not been driven for more than a couple of miles (kilometers) at low
speeds du rin g the p revio us th ree hou rs . Ai r in t he tires ex pand s
when the tire heats up as a resu lt of internal fr iction as it flexes in
use. The tire pressure is hig her when the tire has warmed up than
when it is "co ld ." I
t is the inflation pressure in a "cold" t ire that counts . Therefore, you
s h oul d never le t air ou t of a warm ti re to matc h "Co ld t ire in fl ati on
pressure"
recommendations~ pa ge 328 . The tires wou ld then be
u nde rinflate d and could fail sud denly .
The t ire pressure label o n your Au di lists the recomme nded cold t ire
inflation press ures at maximum capacity for the new, origina l equip ­
m ent tires t hat we re on yo ur vehicle at t he t ime it was manufac ­
tured. For the location of the
labe l~ page 328, fig . 272.
M ost tires lose a ir natu rally ove r ti m e. T hey can a lso lose so me air if
you drive ov er a pothole or h it a curb while parkin g. It is usually not
pos sible to see whe the r the rad ial tir es use d today are unde rin flated
just by look in g at t hem .
T herefore, be sure to chec k tire pressures at least once a month and
a lways be fore go ing o n a lo ng trip . Make su re to take the nu mber o f
people and the amount of luggage into account when ad justing tire
pr ess u re fo r a trip -even one t hat you wou ld not conside r to be
" long ."
See~ page 333, "Tires and vehic le load limits" for more
i mp ort ant i nfor mati on .
A lways use a n accu rate ti re p ressure gauge w hen c hec kin g a nd
adjusting inflation pressures . Chec k all of the tires and be sure not
t o fo rget t he spare t ire . If the pressu re i n an y tire is too high when
the tire is "co ld," let air out of the tire slow ly with the edge of the tire
ga uge and kee p checking the press ure u ntil y ou r each th e pr essu re
that is correct for the load (passengers and luggage) and kind of
d riv in g yo u plan to do .
I f the pressure in any tire is too low, note the difference between the
pressure in the cold tire and the pressure you need and add the air
t hat you need to r each the correct pressure for the veh ic le load
(passengers and luggage) for the tires on your vehicle as listed on
t he o n you r vehicl e and i n thi s m anua l a n d t he kind of driving yo u
p lan to do.
Never exceed the maximum inflation pressure listed on the tire
sidewall for any reason .
Remember that the vehic le manufacturer, not the tire manufacturer,
deter mines the correc t tire pressure for the ti res on your vehicle.
~
Vehicle care

Tires a nd wh eels -
----------------
•
0 Not e
Driving without valve stem caps can cause damage to the tire
valves. To prevent this, a lways make sure that factory instal led valve
stem caps on a ll whee ls are securely mounted on the va lve .
W Fo r the sake of the env ironm ent
Underinflated tires wil l a lso increase the fuel consumption. •
Tires and vehicle load limits
There are lim its to t he amount of load or weight that any ve hicle and
any tire can carry . A vehicle that is overload ed wil l not hand le well
and is more difficu lt to stop. Overload ing can not only lead to loss
of vehic le control , but can a lso damage important parts of the
vehic le and ca n lead to sudden t ire fa ilure, inc luding a blowout a nd
sudden deflation that can cause the vehic le to crash.
Your safety and that of your passengers also depends on making
sure that load l imits are not exceeded. Vehicle load includes every­
body and everything in and on the vehic le. These load limits are
technica lly referred to as the vehicle's
Gross Ve hicle We ig ht R ating
("GVWR").
The "GVWR" includes t he weight of the bas ic ve hicle, al l factory
insta lled accessories, a full tank of fuel , oil , coolant and other fluids
p lus maximum load . The maximum load i ncludes the number of
passengers that the vehicle is intended to carry ("seating capacity")
with an assumed weight of 150 lbs (68 kg) for each passenger at a
designated seating position and the total weight of any luggage in
the vehicle . If you tow a trailer, the weight of the trailer h itch and the
tongue we ight of the loaded trai ler must be included as part of the
vehic le load.
The
Gros s Axle We ight Rating ("GAWR") is the maximum load t hat
can be applied at each of the vehicle's two axles. The Gross Vehicle Weight Rating and the Gross Axle Weight Rating
are listed on the safety comp liance s ticker label loca ted either on
the driver's side B-pillar or on the inside of the fuel fil ler flap . Your
Audi has 5 seating positions, 2 in the front and 3 in the rear for total
seating capacity of 5. Vehicles with power individual rear seats*
have 4 seating positions, 2 in the front and 2 in the rear for total
seating capacity of 4. Eac h seating position has a safety be lt
~ page 209, "Safety be lts".
The fact that there is an upper limit to your veh icle's Gross Vehicle
Weight Rating means that the total weight of whatever is being
carried in the veh ic le ( including t he we ight of a trai ler hitch and the
tongue weight of the loaded trai ler) is limited . The more passengers
in the vehicle or passengers who are heavier than the standa rd
we ights assumed mean that less weight can be carried as luggage .
The tire pressure labe l on your Audi also lists the maximum
combined we ight of a ll of the occupants and luggage or other cargo
that th e vehicle can carry. For the location of the lab el
~ page 328 ,
fig. 272 .
& WARNING
Overloading a v ehicl e can cau se loss of vehicl e control , a cras h or
o ther ac cident , serious p ers on al injur y, and eve n de ath.
• C arrying more weight th an your vehi cle was designed to c arry
will prevent the vehicl e from handling prop erl y and in cre a se the
ri sk of the l oss of vehi cle control.
• The br akes on a vehi cle that has b een overload ed may not be
a bl e to sto p the vehi cle within a safe di sta nce.
• Tir es on a ve hic le th at ha s bee n ov erlo ad ed c an fail sudd enl y,
in clu din g a bl owout and sud den d efl atio n, ca usi ng loss of con trol
and a crash .
• Al ways m ake sur e th at the total lo ad being tr ansp orted -
includin g th e w eight of a tr ailer hitch and th e tong ue weight of a
load ed tr ailer -do es not m ake the vehi cle he avie r than the
vehicle 's Gro ss Vehicl e W eight R ating. •
Vehicle care

-Tires and wheels Determining correct load limit
Use the example below to calculate the
total weight of the passengers and
luggage or other things that you plan to
transport so that you can make sure that
your vehicle will not be overloaded.
Steps for Determining Correct
Load Limit
1. Locate the statement "THE COMBINED
WEIGHT OF OCCUPANTS AND CARGO SHOULD NEVER EXCEED XXX KG OR XXX
LBS"on your vehicle's placard (tire infla­
tion pressure label) => page 328, fig. 272.
2. Determine the combined weight of the driver and passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver and passengers from
"XXX" kilo­
grams or
"XXX" pounds shown on the
sticker=> page 328, fig. 272. 4. The resulting figure equals the available
amount of cargo and luggage load
capacity. For example, if the
"XXX"
amount equals 1400 lbs. and there will
be five 150 lbs. passengers in your
vehicle, the amount of available cargo
and luggage load capacity is 650 lbs.
(1400-750 (5
X 150) = 650 lbs.)
5. Determine the combined weight of luggage and cargo being loaded on the
vehicle. That weight may not safely
exceed the available cargo and luggage
load capacity calculated in Step 4.
6. If your vehicle will be towing a trailer,
load from your trailer will be transferred
to your vehicle. Consult this manual to
determine how this reduces the avail­
able cargo and luggage load capacity of
your vehicle.
- Check the tire sidewall
( => page 336,
fig. 276) to determine the designated
load rating for a specific tire. •

What do I do now? Ill
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•
-Disengage and lower the floor panel before you close the
luggage compartment lid again.
Storing the replaced wheel
-Place the replaced wheel inside the spare wheel well in
the luggage compartment.
Tighten the knurled retaining screw clockwise to secure
the wheel in place.
-Disengage and lower the floor panel before you close the
luggage compartment lid again.
& WARNING
Loose items in the passenger compartment can cause serious
personal injury during hard braking or in an accident .
• Never store the spare wheel or jack and tools in the passenger
compartment.
• Always store all jacking equipment, tools, and the spare wheel
in the luggage compartment .
• Tighten the knurled retaining screw for the spare wheel
securely.
[ i] Tips
Check the inflation pressure of the spare tire periodically to keep the
tire ready for use. •
Changing a wheel
Before changing a wheel
Observe the following precautions for your own and your
passenger's safety when changing a wheel.
-After you experience a tire failure, pull the car well away
from moving traffic and try to reach level ground before
you stop
~ &,. .
-All passengers should leave the car and move to a safe
location (for instance, behind the
guardrail) ~&,. .
-Engage the parking brake to prevent your vehicle from
rolling
unintentionally ~&,. .
-Move selector lever to position P ~ &,..
-If you are towing a trailer: unhitch the trailer from your
vehicle.
-Take the jack and the spare tire out of the luggage
compartment~ page 349.
& WARNING
You or your passengers could be injured while changing a wheel if
you do not follow these safety precautions:
• If you have a flat tire, move a safe distance off the road. Turn off
the engine, turn the emergency flashers on and use other warning
devices to alert other motorists.
• Make sure that passengers wait in a safe place away from the
vehicle and well away from the road and traffic.
• To help prevent the vehicle from moving suddenly and possibly
slipping off the jack, always fully set the parking brake and block
the wheel diagonally opposite the wheel being changed. When one _..
Do -it -yourself service

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_ o_ n
_ s_u _ m_ e_ r_l_ n _f_o _ r_ m_ a_ t
_ i
_ o _ n
__ l'III
re liabi lity . For detailed vehicle maintenance consult your Warranty &
Maintenance book le t.
Und er diff icult oper ating conditi ons, for example at extreme ly low
outside temperatures, in very dusty regions, when towing a trailer
very frequently, etc ., some serv ice work shou ld be performed
between the intervals specified. This applies particu lar ly to :
• oil changes, and
• cleaning or replacing the air filter.
c£> For the sake of the environment
By regularly maintaining your vehicle, you help make sure that emis ­
sion s tandards are maintained, thus minimizing adverse e ffec ts on
the environment. •
Important considerations for you and your
vehicle
The increasing use of electronics, sophisticated fue l injection and
emission contro l systems, and the genera lly increasing techn ica l
complexity of today's automobiles, have steadily reduced the scope
of maintenance and repairs which can be carr ied out by veh ic le
owners.
Also , safet y and env ironmental concerns p lace very strict
l im its on the nature of repairs a nd adjustmen ts t o engine and trans ­
mission parts which an owner can perform.
Maintenance, adjustments and repairs usually require special tools,
testing devices and other equipment availab le to spec ia lly trained
workshop personne l in order to assure proper performance, reli ­
abil ity and sa fety of the vehicle a nd its many systems.
I mproper maintenance, adjustments and repairs can impair the
operat ion a nd rel iabil ity of your vehicle and even vo id your vehicle
warranty. Therefore , proof of servicing in accordance with the main ­
t enance sched ule may be a cond ition fo r uphold ing a p ossi ble
warranty claim made within the warranty period.
Controls and equip­ ment Safety first Vehicle operation
Above all, operational safety can be adverse
ly affected, creating
unnecessary risks for you a nd yo ur passengers .
If in doubt about any servicing, have it done by your authorized Audi
dea ler or any other properly equipped and qualified workshop. We
strongly urge you to give your authorized Audi dea ler the opportu ­
nity to perform all scheduled maintenance and necessary repairs.
Your dealer has the fac ilities, origina l parts and trained spec ialists
to keep your vehic le running proper ly.
P e rforming limited maintenan ce yourself
The following pages describe a limited number of procedures which
ca n be performed on your vehicle with ord inary tools, should the
need arise and trained personne l be unavailab le. Before performing
any of these procedures, a lways t hor oughly read all o f the app li­
cable text and carefu lly fo llow the instruct ions given. Always rigor ­
ously observe t he
WARNINGS provided .
Before you che ck anything in the engine comp artment , alwa ys re ad
and heed all
WARNING S=> & and => & in "Working in the engine
compartment" on
page 307.
& WARNING
• Serious personal injury may occur a s a result of imprope rly
performed maintenance , adju stments or repair s.
• Always be e xtremely careful when working on the vehi cle .
Always follow commonly accepted safety practice s and general
c ommon sen se . Ne ver risk per sonal injur y.
• Do not attempt any of the maintenance , checks or repairs
de scribed on the following pages if you are not fully familiar with
these or other pro cedures with re spe ct to the vehicle , or are uncer ­
tain how to pro ceed .
• Do not do any work without the proper tools and equipment.
Have the ne ce ssary work done by your authorized Audi dealer or
another properly equipped and qualified workshop .
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Vehicle care Do-it-yourself service Technical data